Koi musalmaan salaam kare, to yeh jawaab de
If a Muslim greets salaam, then respond with this
Wa alaykumu as-salam Warahmatullahi Wabarakaatu.
Tarjama

Aur tum par (bhi) salaamati ho aur Allah ki rehmat aur us ki barkatein hon.
Meaning

May the peace, mercy, and blessings of Allah be with you too.